diff --git a/generate_cpp.cpp b/generate_cpp.cpp
index bbee9b3..b9b2d12 100644
--- a/generate_cpp.cpp
+++ b/generate_cpp.cpp
@@ -1118,6 +1118,9 @@
           out << " = " << cppType << "(0)";
         }
       }
+    } else if (AidlTypenames::IsPrimitiveTypename(variable->GetType().GetName()) &&
+               !variable->GetType().IsArray()) {
+      out << " = {}";
     }
     out << ";\n";